Results 41 to 50 of about 26,654,237 (305)

Models for gramicidin channels

Biophysical Journal, 1992
To the Editor: In several recent papers, NMR results for gramicidin A have been compared with predictions based on various models for a right-handed channel. In particular, 2H quadrupolar splittings (Hing et al., 1990a,b; Prosser et al., 1991) or '5N chemical shifts (Chiu et al., 1991) from solid-state NMR spectra of labeled gramicidin A in oriented ...
Koeppe, R.E., Taylor, M.J., Andersen, O.S.   +2 more
openaire   +2 more sources

Physics-Informed Generalizable Wireless Channel Modeling with Segmentation and Deep Learning: Fundamentals, Methodologies, and Challenges [PDF]

IEEE wireless communications
Channel modeling is fundamental in advancing wireless systems and has thus attracted considerable research focus. Recent trends have seen a growing reliance on data-driven techniques to facilitate the modeling process and yield accurate channel ...
Ethan Zhu, Haijian Sun, Mingyue Ji
semanticscholar   +1 more source

Propagation Models in Vehicular Communications

IEEE Access, 2021
In the advent of becoming reality, the era of autonomous vehicles is closer than ever, and with it, the need for faster and reliable wireless connections.
Fidel Alejandro Rodriguez-Corbo, Leyre Azpilicueta, Mikel Celaya-Echarri, Ana Vazquez Alejos, Francisco Falcone   +4 more
doaj   +1 more source

Channel Characterization and Modeling for Optical Wireless Body-Area Networks

IEEE Open Journal of the Communications Society, 2020
We address channel characterization and modeling for medical wireless body-area networks (WBANs) based on the optical wireless technology. We focus on the intra-WBAN communication links, i.e., between a set of medical sensors and a coordination node ...
Oussama Haddad, Mohammad-Ali Khalighi, Stanislav Zvanovec, Mouloud Adel   +3 more
doaj   +1 more source

A Model for Adversarial Wiretap Channels

IEEE Transactions on Information Theory, 2016
In wiretap model of secure communication the goal is to provide (asymptotic) perfect secrecy and reliable communication over a noisy channel that is eavesdropped by an adversary with unlimited computational power. This goal is achieved by taking advantage of the channel noise and without requiring a shared key.
Pengwei Wang 0006, Reihaneh Safavi-Naini
openaire   +2 more sources

A survey of massive MIMO channel measurement and model

Dianxin kexue, 2021
The conducted measurement campaigns at home and abroad were presented.Meanwhile, proposals and standard channel models from the international standardization organization were reviewed.The propagation characteristics of massive MIMO wireless channels ...
Yanping LU, Liu LIU, Liqin FU, Jiahui QIU, Kai LIU   +4 more
doaj  

Biometric Identity Based on Intra-Body Communication Channel Characteristics and Machine Learning

Sensors, 2020
In this paper, we propose and validate using the Intra-body communications channel as a biometric identity. Combining experimental measurements collected from five subjects and two multi-layer tissue mimicking materials’ phantoms, different machine
Ahmed E. Khorshid, Ibrahim N. Alquaydheb, Fadi Kurdahi, Roger Piqueras Jover, Ahmed Eltawil   +4 more
doaj   +1 more source

Semi-Deterministic Dynamic Millimeter-Wave Channel Modeling Based on an Optimal Neural Network Approach

IEEE Transactions on Antennas and Propagation, 2022
Billions of mobile terminals will be deployed in various Internet of Things (IoT), in which millimeter-wave (mmWave) technology will be gradually applied.
Xiongwen Zhao, Zihao Fu, W. Fan, Yu Zhang, S. Geng, Fei Du, Peng Qin, Zhenyu Zhou, Lei Zhang   +8 more
semanticscholar   +1 more source

Membrane-Mediated Action of Phosphodiesterase 5 Inhibitors

Pharmaceutics
Background/Objectives: Phosphodiesterase 5 (PDE5) inhibitors, sildenafil, vardenafil, and tadalafil, activate the cyclic guanosine monophosphate pathway resulting in vascular smooth muscle relaxation.
Anna I. Malykhina, Svetlana S. Efimova, Olga S. Ostroumova   +2 more
doaj   +1 more source